Seminar Algebra and Geometry: Charlie Petitjean (Université de Bourgogne)

Birational equivalence of divisors and T-varieties

In this talk we will consider birational equivalence of non necessarily irreducible divisors on rational surfaces. It will be given an useful invariant (in this context) related to the Kodaira dimension. All the considered constructions will be connected to particular presentations of T-varieties.

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